/******************************************************************************                        
 * $Id$                                                                                                
 *                                                                                                     
 * Project:  libLAS - http://liblas.org - A BSD library for LAS format data.                           
 * Purpose:                                                                                            
 * Author:   Martin Vales, martin_gnu@mundo-r.com                                                      
 *                                                                                                     
 ******************************************************************************                        
 * Copyright (c) 2008, Martin Vales                                                                    
*     11  * All rights reserved.                                                                       
 *                                                                                                     
 * Redistribution and use in source and binary forms, with or without                                  
 * modification, are permitted provided that the following                                             
 * conditions are met:                                                                                 
 *                                                                                                     
 *     * Redistributions of source code must retain the above copyright                                
 *       notice, this list of conditions and the following disclaimer.                                 
 *     * Redistributions in binary form must reproduce the above copyright                             
 *       notice, this list of conditions and the following disclaimer in                               
 *       the documentation and/or other materials provided                                             
 *       with the distribution.                                                                        
 *     * Neither the name of the Martin Isenburg or Iowa Department                                    
 *       of Natural Resources nor the names of its contributors may be                                 
 *       used to endorse or promote products derived from this software                                
 *       without specific prior written permission.                                                    
 *                                                                                                     
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS                                 
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT                                   
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS                                   
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE                                      
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,                                 
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,                                
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS                               
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED                                  
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,                              
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT                                  
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY                                     
 * OF SUCH DAMAGE.                                                                                     
 ****************************************************************************/                         
                                                                                                       
using System;                                                                                          
using System.Collections.Generic;                                                                      
using System.Text;                                                                                     
using LASError = System.Int32;                                                                         
using LASWriterH = System.IntPtr;                                                                      
using LASReaderH = System.IntPtr;                                                                      
using LASPointH = System.IntPtr;                                                                       
using LASGuidH = System.IntPtr;                                                                        
using LASVLRH = System.IntPtr;                                                                         
using LASHeaderH = System.IntPtr;                                                                      
                                                                                                       
namespace LibLAS                                                                                       
{                                                                                                      
    /// <summary>                                                                                      
    /// LASGuid class                                                                                  
    /// </summary>                                                                                     
    public class LASGuid : IDisposable                                                                 
    {                                                                                                  
private LASGuidH hguid;                                                                             
        /// <summary>                                                                                  
        /// The object user should call this method when they finished with the object.                
        /// </summary>                                                                                 
        ///                                                                                            
        public void Dispose()                                                                          
        {                                                                                              
            CAPI.LASGuid_Destroy(hguid);                                                               
            // Clean up unmanaged resources here.                                                      
            // Dispose other contained disposable objects.                                             
        }                                                                                              
                                                                                                       
        /// <summary>                                                                                  
        /// Create a new random GUID.                                                                  
        /// </summary>                                                                                 
        public LASGuid()                                                                               
        {                                                                                              
            hguid = CAPI.LASGuid_Create();                                                             
        }                                                                                              
                                                                                                       
        /// <summary>                                                                                  
        ///  Creates a new GUID using a opaque pointer.                                                
        /// </summary>                                                                                 
        /// <param name="hGuid">LASGuidH opaque pointer</param>                                        
        public LASGuid(LASGuidH hGuid)                                                                 
        {                                                                                              
            hguid = hGuid;                                                                             
        }                                                                                              
                                                                                                       
        /// <summary>                                                                                  
        /// Creates a new GUID opaque pointer using the given string.                                  
        /// </summary>                                                                                 
        /// <remarks>An example GUID might be something like '8388F1B8-AA1B-4108-BCA3-6BC68E7B062E'</re
        /// <param name="guidString">string A GUID string in the form "00000000-0000-0000-0000-00000000
        public LASGuid(String guidString)                                                              
        {                                                                                              
            hguid = CAPI.LASGuid_CreateFromString(guidString);                                         
        }                                                                                              
                                                                                                       
        /// <summary>                                                                                  
        /// Gets the String value of the Guid                                                          
        /// </summary>                                                                                 
        /// <returns>the String value of the Guid</returns>                                            
        public override string ToString()                                                              
        {                                                                                              
            return CAPI.LASGuid_AsString(hguid);                                                       
        }                                                                                              
                                                                                                       
        /// <summary>                                                                                  
        /// Gets the GUID opaque pointer                                                               
        /// </summary>                                                                                 
        /// <returns>the GUID opaque pointer</returns>                                                 
        internal LASGuidH GetPointer()                                                                 
        {                                                                                              
            return hguid;                                                                              
        }                                                                                              
                                                                                                       
        /// <summary>                                                                                  
        /// test if is equal to other object.                                                          
        /// </summary>                                                                                 
        /// <param name="obj">object to compare</param>                                                
        /// <returns>true if both are equal</returns>                                                  
        public override bool Equals(object obj)                                                        
        {                                                                                              
            //if parameter is null return false                                                        
            if (obj == null)                                                                           
            {                                                                                          
                return false;                                                                          
            }                                                                                          
                                                                                                       
            //if parameter cannot be cast to Guid return false                                         
            LASGuid guidd = obj as LASGuid;                                                            
            if ((object)guidd == null)                                                                 
            {                                                                                          
                return false;                                                                          
            }                                                                                          
                                                                                                       
            if (CAPI.LASGuid_Equals(hguid, guidd.GetPointer()) == 1)                                   
            {                                                                                          
                return true;                                                                           
            }                                                                                          
            else                                                                                       
            {                                                                                          
                return false;                                                                          
            }                                                                                          
        }                                                                                              
                                                                                                       
        /// <summary>                                                                                  
        ///                                                                                            
        /// </summary>                                                                                 
        /// <returns></returns>                                                                        
        public override int GetHashCode()                                                              
        {                                                                                              
            return base.GetHashCode();                                                                 
        }                                                                                              
                                                                                                       
        /// <summary>                                                                                  
        /// test if is equal to other LASGuid.                                                         
        /// </summary>                                                                                 
        /// <param name="obj">LASGuid to compare</param>                                               
        /// <returns>true if both are equal</returns>                                                  
        public bool Equals(LASGuid obj)                                                                
        {                                                                                              
            //if parameter cannot be cast to Guid return false                                         
                                                                                                       
            if ((object)obj == null)                                                                   
            {                                                                                          
                return false;                                                                          
            }                                                                                          
               if (CAPI.LASGuid_Equals(hguid, obj.GetPointer()) == 1)                                  
            {                                                                                          
                return true;                                                                           
            }                                                                                          
            else                                                                                       
            {                                                                                          
                return false;                                                                          
            }                                                                                          
        }                                                                                              
    }                                                                                                  
}                                                                                                      